/Engine/Source/Developer/AutomationDriver/Public/IDriverSequence.h
Queues a change of focus to the element, then triggers the series of events to invoke keyboard input for releasing the specified character. The character will not be pressed if it is not currently being pressed.
[IActionSequence](API\Developer\AutomationDriver\IActionSequence) & Release ( const [TSharedRef](API\Runtime\Core\Templates\TSharedRef)< [IElementLocator](API\Developer\AutomationDriver\IElementLocator), ESPMode::ThreadSafe > & ElementLocator, [FKey](API\Runtime\InputCore\FKey) Key )